http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111323557-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N1-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21F7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-222 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21F7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-22 |
| filingDate | 2020-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111323557-B |
| titleOfInvention | Composite coal rock roof fracturing extraction simulation test method under true three-dimensional stress |
| abstract | The invention discloses a composite coal rock roof fracturing extraction simulation test method under true three-dimensional stress, which comprises the steps of preparing a composite coal rock sample; the test sample is arranged on a true triaxial test testing device; applying a triaxial stress; adding gas pressure; gas is extracted for the first time; fracturing the upper rock stratum; secondary gas extraction; replacing the composite coal rock sample, and performing other tests in the same group; and (6) collating the test data. The method is characterized in that a composite coal rock sample with a fracturing hole and an extraction hole is placed in a true triaxial test testing device, and the fracturing hole, a fracturing pipe, the extraction hole, the extraction pipe and a gas injection hole are ingeniously arranged, so that effective control of fracturing, extraction and gas injection can truly reflect the influence of the composite coal rock on the improvement of gas extraction amount under the condition of top plate fracturing, and the method is used for researching the optimal technical parameters of top plate fracturing matched with coal seam extraction under the action of true triaxial stress and providing scientific basis for scientifically selecting related technological parameters in engineering practice. |
| priorityDate | 2020-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.